Combination tool



Aplr'fili 23, 1935. w. F. FLESSELLES COMBINATION TOOL Filed March l4,1934 Patented Apr. 23, 1935 UNi'i'E Lil STATES TNT COMBINATION TOOLApplication March 14, 1934, Serial No. 715,542 In Australia April '7,1983 1 Claim.

5 rectangular and substantially rectangular bodies such as bars of metalwith fiat surfaces.

The invention is intended also to function as a set square and will befound very useful for many kindred purposes.

According to the invention I provide a graduated bar or blade after thenature of a steel rule and securely mount upon one end thereof anabutment disposed at right angles to the said bar and projecting aboveor below the face thereof as in the form of a T or set square.

The graduated bar is provided with orifices in the form of diagonalslots preferably disposed at an angle of 45 and parallel to one another.The orifices, which are numbered, are disposed preferably throughout thelength of the graduated bar portion, the main object of these being toenable the tool to be used for centering work, but they also enable itto be used as a gauge by placing a pencil or scriber in a particularhole and using the abutment as a stop against the edge of the work.

In order that the invention may be more readily understood referencewill now be made to the accompanying drawing, wherein:

Figure 1 is a plan view illustrating the invention.

Figure 2 is a detail view showing the first step in using the inventionto centre a piece of work.

Figure 3 is a detail view showing the piece of Work inscribed after theoperation shown in Figure 2.

Figure l is a detail view showing the second step in using the inventionto centre a piece of work; in this view it will be noted that theposition of the tool has been reversed to that shown in Figure 2.

Figure 5 is a detail view showing the piece of work inscribed by adiagonal line in two planes the intersection of which represents thecentre point of the width of the work.

The bar which may be graduated in units of linear measurement isprovided with orifices in the form of diagonal slots 2| each of which isnumbered, there being nineteen slots shown in Figure 1.

An abutment 23 is secured in known manner,

for instance by a screw it, to the bar or blade 20 and enables the toolto be used as an ordinary square.

In use as a centre marker the tool is placed upon the work 25 with thefixed abutment 23 against one face thereof, the approximate width of thework is then noted upon the graduated scale and the measurement dividedby two which roughly gives the position of the centre of the work 25.

The particular diagonal orifice H, which falls upon the approximatecentre, is then noted by its numbers I to l9 and a datum line 26 isscribed upon the work 25 at right angles to the fixed abutment 23 say bymeans of the lower edge of the blade 20; or the position of the blademay be retained by the point of the scriber; also a diagonal line 2? isscribed upon the work 25 with the aid of the selected orifice 2 I as aguide leaving the work as shown in Figure 3.

ihe second operation (see Figure 4) is to place the tool on the righthand side of the work 25 with the reverse side face down upon the workand the lower edge of the blade 20 on the datum line 26 or in engagementwith the scriber as before and then scribe a second diagonal line 28with the same orifice 2! as a guide.

The work will then have the appearance shown in Figure 5 and theintersection of the two diagonal lines 2? and 28 will be found to be thecorrect centre of the work 25 in that particular plane.

It will be appreciated that various modifications may be made withoutdeparting from the spirit of the invention as defined by the appendedclaim.

I claim.

An improved combination tool for centering rectangular and substantiallyrectangular bodies such as bars of metal, comprising a blade havingtherein a plurality of closely disposed diagonal orifices or slotspreferably arranged at an angle of to the edges of said blade andparallel to each other; said blade having numerals arranged in sequenceon both of its faces and adjacent to said orifices or slots, and saidblade having thereon graduations indicating units of linear measurement;and an abutment securely mounted upon one end of said blade, saidabutment being disposed at right angles with respect to the edges r

